What is the best Exchanger for instution business account?
Isit binance ? Or They are better for retail traders?
Personally I'm using Binance. In the present time Binance exchanger is so much good and user friendly. Using is so much easy and this is too good for trader. All time high trading volume. You can easily convert your coin in stable coin. You can try it.
Aside from that, the OP is asking for setting up an institution business account. Below is the link where you can find useful answers about this specific account. And also, I can say, binance is pretty secure for corporate accounts because they have insurance in place also. So you have no worries about the safety of your funds.
Corporate Account Application FAQ -
https://www.binance.com/en/support/articles/360015552032